Improvement in stop-cocks



GEORGE C. BAILEYv Stop-Cocks.

Patented June 4,1872..

PHO

UNITED STATES GEORGE C. BAILEY, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN STOP-COCKS.

Specification forming part of Letters Patent No. 127,547, dated June 4, 1872.

SPEcIEIcATIoN.

To all whom it may concern,.-i

Beit known that I, GEORGE C. BAILEY, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Stop-Cocks 5 and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawing making part of this specification, in which- Figure l is a vertical sectional view of my improved stop-cock. Fig. 2, by a like view, shows a modilied arrangement of the same devices; and Fig. 3 is a cross-section through x m, Fig. l.

Like letters of reference indicate like parts in each.

My invention relates, to that class of stopcocks in which a water-waste passage is desired for the purposev of emptying the discharge-pipe.- In most or all such stop-cocks as heretofore made the main supply and waterwaste have been opened and closed by seprate and independentlyacting devices; or, where a single device was employed for both purposes, the water supply was commonly opened before the water-waste passage was closed, with a consequent unnecessary waste of water. By my improvement I vpropose to arrange a spring on the valve-stem in such a way that its action shall prevent the opening of either the water-supply or the water-waste until the other is closed.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and mode of operation.

In the drawing, A represents the supplypipe, and B the discharge. A diaphragm, B', separates the two, and in this is a water-supply opening, around which is the valve-seat b. B is the valve-case, closed at its upper end by the screw-cap D, and through this plays the valve-stem E, which is operated by a T,E, or equivalent device. This stem is threaded at its lower end, and carries a valve, M, the upper open end of which is tapped for the threaded stem E to work therein. This valve has a suitable packing, u, on its lower face, and has only a vertical motion, being prevented from rotating by the ribs u', which playin grooves in the side of the valve-case, as shown in Fig. 3. I am now describing-more particularly the devices shown in Fig. l. Just inside the upper end of the valve-case B, and on a shoulder therein, I place an annular metallic washer, a. Resting on this, and projecting out so as to cover the end of the valve-case B, is a packing-ring, s, the two being pressed well down and held tightly in place by the screwcap D. The opening through the washer a and packing-ring s is a little larger than the stem E, as at c', so as to provide room for the waste water to pass up through and out at the water-escape opening g. On thestem E is a flange, e, of such diameter that when down it will close the annular opening c', but when up will leave that opening and the water-waste opening unobstructed. But the form of the opening i is unimportant. A spiral spring, c, is arranged with one end bearing on a shoulder, m, of the valve M, and the other end against the lower face of the washer a, though it may bear against any other fixed device appertaining to the valve-case. These devices being in the position shown in Fig. l, it will be obvious that on the stem E being turned down the spring c will hold the valve M to its seat until the flange e rests on the packingring s. This will close the annular opening and cut offv communication with the waterwaste passage g. Then, as the turning of the stem is continued, the valve M will be raised from its seat and the water-supply be opened. When the stem is turned the other way the action of the spring c on the valve M will cause the latter to be seated, so cutting olf the water-supply; and then the ange e will rise from its seat and open communication with the water-waste.

In Fig. 2 I have shown substantially the same devices with a like operation, but in an arrangement somewhat modified. The same letters of reference indicate the same parts as in Fig. 1. The washer a and dange e of Fig. l are in this arrangement combined together in the ange e. The upper end of the valve M is of stem-form, as lat m', and this stem screws into and out of the tapped socket c. This ange e is large enough to cover the entire opening of the valve-case, and the spring c is arranged above the flange, with one end bearing thereon and the other bearing against the cap or other fixed part of the valve-case B, with or without an interposed packing-ring, d.

I With the devices in the position shown in Fig.

2 the Water-supply is open, and the ange e, being pressed down on the packing-ring s, closes communication with the Waste-passage g. If, now, the valve M be screwed down to its seat, the flange e will retain its place till the valve strikes its seat, Vand then, the turning of the stem being continued, the spring c will be compressed and the flange e rise from its seat, thus opening communication from the discharge-pipe to the Waste-passage. In closing the Water-Waste and opening the valve the operation is directly the reverse, the flange rst closing down on its seat and then the valve being opened.

It Will be observed that the operation in Figs. 1 and 2 is the same; that in both the Water-suppl y and Water-Waste are each opened and closed immediately on the closing or opening of the other; that in no case can both be open at the same time; that both are operated by a single device; and that the device by Which the same operation is secured in both is the spring c, with one end bearing on a fixed part of the valve-case and the other end bearing on either the valve which closes the Watersupply or on the flange which closes the waste, with or Without an interposed gasket, o.

, as set forth.

2. The combination of a flange, e, packingring `s, spring c, and Waste-passage g, arranged substantially as and for the purposes set forth.

3; In a stop-cock the combination of the flanged stem E, packing-ring s, Waste-passage g, and spring o with valve M and seat b, an ranged substantially as and for the purposes set forth.

In testimony whereof I, the said GEORGE C. BAILEY, have hereunto set my hand.

GEO. C. BAILEY W'itnesses:

A. S. NICHOLSON, G. H. CHRIsTY. 

